Tuning the Josephson diode response with an ac current
(2024) In Physical Review Research 6(2).- Abstract
Josephson diodes are superconducting elements that show an asymmetry in the critical current depending on the direction of the current. Here, we theoretically explore how an alternating current bias can tune the response of such a diode. We show that for slow driving there is always a regime where the system can only carry zero-voltage dc current in one direction, thus effectively behaving as an ideal Josephson diode. Under fast driving, the diode efficiency is also tunable, although the ideal regime cannot be reached in this case. We also investigate the residual dissipation due to the time-dependent current bias and show that it remains small. All our conclusions are solely based on the critical current asymmetry of the junction, and... (More)
Josephson diodes are superconducting elements that show an asymmetry in the critical current depending on the direction of the current. Here, we theoretically explore how an alternating current bias can tune the response of such a diode. We show that for slow driving there is always a regime where the system can only carry zero-voltage dc current in one direction, thus effectively behaving as an ideal Josephson diode. Under fast driving, the diode efficiency is also tunable, although the ideal regime cannot be reached in this case. We also investigate the residual dissipation due to the time-dependent current bias and show that it remains small. All our conclusions are solely based on the critical current asymmetry of the junction, and are thus compatible with any Josephson diode.
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- author
- Seoane Souto, Rubén
LU
; Leijnse, Martin LU ; Schrade, Constantin ; Valentini, Marco ; Katsaros, Georgios and Danon, Jeroen
- organization
- publishing date
- 2024-04
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Research
- volume
- 6
- issue
- 2
- article number
- L022002
- publisher
- American Physical Society
- external identifiers
-
- scopus:85189325709
- ISSN
- 2643-1564
- DOI
- 10.1103/PhysRevResearch.6.L022002
- language
- English
- LU publication?
- yes
- id
- 74667a21-37e4-4d22-9a23-ddbe2f6bbdb8
- date added to LUP
- 2024-04-24 13:52:22
- date last changed
- 2024-04-24 13:53:11
@article{74667a21-37e4-4d22-9a23-ddbe2f6bbdb8, abstract = {{<p>Josephson diodes are superconducting elements that show an asymmetry in the critical current depending on the direction of the current. Here, we theoretically explore how an alternating current bias can tune the response of such a diode. We show that for slow driving there is always a regime where the system can only carry zero-voltage dc current in one direction, thus effectively behaving as an ideal Josephson diode. Under fast driving, the diode efficiency is also tunable, although the ideal regime cannot be reached in this case. We also investigate the residual dissipation due to the time-dependent current bias and show that it remains small. All our conclusions are solely based on the critical current asymmetry of the junction, and are thus compatible with any Josephson diode.</p>}}, author = {{Seoane Souto, Rubén and Leijnse, Martin and Schrade, Constantin and Valentini, Marco and Katsaros, Georgios and Danon, Jeroen}}, issn = {{2643-1564}}, language = {{eng}}, number = {{2}}, publisher = {{American Physical Society}}, series = {{Physical Review Research}}, title = {{Tuning the Josephson diode response with an ac current}}, url = {{http://dx.doi.org/10.1103/PhysRevResearch.6.L022002}}, doi = {{10.1103/PhysRevResearch.6.L022002}}, volume = {{6}}, year = {{2024}}, }